I am attempting to calculate a value to be used in a few different places in my pipeline. The definition is in a method (in a global library, but I have identical behavior with an inline method).

environment {
  MY_VAR = calculate()
}

In this scenario, MY_VAR is always null--even if the RHS is the GString {{ "${1+2}" }}! In fact, credentials() is the only non-compile-time-constant expression that I can get to evaluate to non-null.

I expected the values in the environment block to be evaluated on the master when the pipeline is started up and then injected appropriately.